Added rest option: excludeKeys (#5737)

* Added restOption: excludeKeys

* improve tests

spec/ParseQuery.spec.js

@@ -3348,6 +3348,122 @@ describe('Parse.Query testing', () => {
         }
       );
   });
+  it('exclude keys', async () => {
+    const obj = new TestObject({ foo: 'baz', hello: 'world' });
+    await obj.save();
+
+    const response = await request({
+      url: Parse.serverURL + '/classes/TestObject',
+      qs: {
+        excludeKeys: 'foo',
+        where: JSON.stringify({ objectId: obj.id }),
+      },
+      headers: masterKeyHeaders,
+    });
+    expect(response.data.results[0].foo).toBeUndefined();
+    expect(response.data.results[0].hello).toBe('world');
+  });
+
+  it('exclude keys with select same key', async () => {
+    const obj = new TestObject({ foo: 'baz', hello: 'world' });
+    await obj.save();
+
+    const response = await request({
+      url: Parse.serverURL + '/classes/TestObject',
+      qs: {
+        keys: 'foo',
+        excludeKeys: 'foo',
+        where: JSON.stringify({ objectId: obj.id }),
+      },
+      headers: masterKeyHeaders,
+    });
+    expect(response.data.results[0].foo).toBeUndefined();
+    expect(response.data.results[0].hello).toBeUndefined();
+  });
+
+  it('exclude keys with select different key', async () => {
+    const obj = new TestObject({ foo: 'baz', hello: 'world' });
+    await obj.save();
+
+    const response = await request({
+      url: Parse.serverURL + '/classes/TestObject',
+      qs: {
+        keys: 'foo,hello',
+        excludeKeys: 'foo',
+        where: JSON.stringify({ objectId: obj.id }),
+      },
+      headers: masterKeyHeaders,
+    });
+    expect(response.data.results[0].foo).toBeUndefined();
+    expect(response.data.results[0].hello).toBe('world');
+  });
+
+  it('exclude keys with include same key', async () => {
+    const pointer = new TestObject();
+    await pointer.save();
+    const obj = new TestObject({ child: pointer, hello: 'world' });
+    await obj.save();
+
+    const response = await request({
+      url: Parse.serverURL + '/classes/TestObject',
+      qs: {
+        include: 'child',
+        excludeKeys: 'child',
+        where: JSON.stringify({ objectId: obj.id }),
+      },
+      headers: masterKeyHeaders,
+    });
+    expect(response.data.results[0].child).toBeUndefined();
+    expect(response.data.results[0].hello).toBe('world');
+  });
+
+  it('exclude keys with include different key', async () => {
+    const pointer = new TestObject();
+    await pointer.save();
+    const obj = new TestObject({
+      child1: pointer,
+      child2: pointer,
+      hello: 'world',
+    });
+    await obj.save();
+
+    const response = await request({
+      url: Parse.serverURL + '/classes/TestObject',
+      qs: {
+        include: 'child1,child2',
+        excludeKeys: 'child1',
+        where: JSON.stringify({ objectId: obj.id }),
+      },
+      headers: masterKeyHeaders,
+    });
+    expect(response.data.results[0].child1).toBeUndefined();
+    expect(response.data.results[0].child2.objectId).toEqual(pointer.id);
+    expect(response.data.results[0].hello).toBe('world');
+  });
+
+  it('exclude keys with includeAll', async () => {
+    const pointer = new TestObject();
+    await pointer.save();
+    const obj = new TestObject({
+      child1: pointer,
+      child2: pointer,
+      hello: 'world',
+    });
+    await obj.save();
+
+    const response = await request({
+      url: Parse.serverURL + '/classes/TestObject',
+      qs: {
+        includeAll: true,
+        excludeKeys: 'child1',
+        where: JSON.stringify({ objectId: obj.id }),
+      },
+      headers: masterKeyHeaders,
+    });
+    expect(response.data.results[0].child).toBeUndefined();
+    expect(response.data.results[0].child2.objectId).toEqual(pointer.id);
+    expect(response.data.results[0].hello).toBe('world');
+  });
 
   it('select keys with each query', function(done) {
     const obj = new TestObject({ foo: 'baz', bar: 1 });

src/RestQuery.js

@@ -13,6 +13,7 @@ const AlwaysSelectedKeys = ['objectId', 'createdAt', 'updatedAt', 'ACL'];
 //   count
 //   include
 //   keys
+//   excludeKeys
 //   redirectClassNameForKey
 //   readPreference
 //   includeReadPreference
@@ -102,6 +103,13 @@ function RestQuery(
         this.keys = Array.from(new Set(keys));
         break;
       }
+      case 'excludeKeys': {
+        const exclude = restOptions.excludeKeys
+          .split(',')
+          .filter(k => AlwaysSelectedKeys.indexOf(k) < 0);
+        this.excludeKeys = Array.from(new Set(exclude));
+        break;
+      }
       case 'count':
         this.doCount = true;
         break;
@@ -184,6 +192,9 @@ RestQuery.prototype.execute = function(executeOptions) {
     .then(() => {
       return this.handleIncludeAll();
     })
+    .then(() => {
+      return this.handleExcludeKeys();
+    })
     .then(() => {
       return this.runFind(executeOptions);
     })
@@ -705,6 +716,24 @@ RestQuery.prototype.handleIncludeAll = function() {
     });
 };
 
+// Updates property `this.keys` to contain all keys but the ones unselected.
+RestQuery.prototype.handleExcludeKeys = function() {
+  if (!this.excludeKeys) {
+    return;
+  }
+  if (this.keys) {
+    this.keys = this.keys.filter(k => !this.excludeKeys.includes(k));
+    return;
+  }
+  return this.config.database
+    .loadSchema()
+    .then(schemaController => schemaController.getOneSchema(this.className))
+    .then(schema => {
+      const fields = Object.keys(schema.fields);
+      this.keys = fields.filter(k => !this.excludeKeys.includes(k));
+    });
+};
+
 // Augments this.response with data at the paths provided in this.include.
 RestQuery.prototype.handleInclude = function() {
   if (this.include.length == 0) {

src/Routers/ClassesRouter.js

@@ -165,6 +165,7 @@ export class ClassesRouter extends PromiseRouter {
       'order',
       'count',
       'keys',
+      'excludeKeys',
       'include',
       'includeAll',
       'redirectClassNameForKey',
@@ -200,6 +201,9 @@ export class ClassesRouter extends PromiseRouter {
     if (typeof body.keys == 'string') {
       options.keys = body.keys;
     }
+    if (typeof body.excludeKeys == 'string') {
+      options.excludeKeys = body.excludeKeys;
+    }
     if (body.include) {
       options.include = String(body.include);
     }